Music-leaf turner.



C. H. & J. M. DAVIS.

MUSIC LEAF TURNER.

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2 SHEETS-SHEET 1.

v1 uu wtozd CHwLlS, JM Zia/vilo Patented July 25, 1911.

2 SHEETS-SHEET 2.

'UNITED sTATEs PATENT oEEIcE.

CHARLES H. DAVIS, 0F KERN, CALIFORNIA, AND JOSEPH lVL DAVIS, OF LIMA, OHIO.

MUSIC-LEAF TURNER.

To all whom it may concern:

Se it known that we, Cinmnns H. Davis and Josnelr M. Davis, citizens of the United States, residing at Kern, county of Kern, and State, of California, and Lima, county of Allen, and State of Ohio, respectively, have invented certain new and useful lmprovements inl\f[nsic-Leaf Turners,of which the following is a specification.

rlhe primary object of this invention is an improved construction of music leaf'turner which is portable and capable of heilig mounted upon any' conventional type of music shelf or a piano or other similar instrument, or secured to a music stand in any desired way.

The invention also has for its object la simple device of this character which may be easily operated to successively turn the pages of a musical composition duringl the rendition thereof without the necessity of any appreciable panse in the plating, and preferably by the use of a single actuating key or pnslnbntton` the employment of a single key :l'or all of the leaf turning arms not onl rendering the device simple in construction, but enhancing the desirability of the device from a practical standpoint, owing to the fact that no act of selection necessary on the part of the performerA as would be the case 'were there. to hegt wo or three keys to be pushed, one for each leaf turning arm.

Nit'lr these and other objects in View. as will more fully appear as the description proce-eds, the invention consists in certain constructions, arrangements and comhina tions of the parts that we shall hereina'tter l'nlly descril'ie and claim.

For a full nmlerstanding of the invention, reference is to be, had to the following description and accompanying drawings, in

which:

Figure 1 is a perspective yiew of a music leaf turner constructed in accordance with our invention', Fig. 2 is a bottom plan view of the device, the base and the bottom of the casingl being omitted; Fig. 3 is an end view of the casing; l"igs'..4, 5 and (i are detail views illustrating ditl'erent steps in the. operation of the device; Fig. 7 is a longitudinal sectional View; Fig. 8 is a perspective Specification of Letters Patent.

Application filed December 22, 1909.

Patented July 25, 1911. sei-iai No. 534,487.

view of the three detents employed and the single push bar designedV to actuate the same, and Fie'. t) is a perspective view of the outer end ot one oit the leaf turning arms showing one form of leaf engaging clip which may be used.

Coi-respondng` and like parts are referred to in the followingI description and indicated in all the views of the drawings hy the same reference characters.

The base of our improved music leaf turner may be of any desired construction and design, it being shown in the present instance for the purpose of illustration only, as embodying` a top plate 1, a block 2 to the upper face of which the plate 1 is secured, and a felt or similar bottom Strip 3 so that the device may be rested upon the music shelf of a piano, organ, or the like without liability of injuring the same. The block 2 is cnt out, as indicated at Il, to receive a casing t in which the actuating parts are mounted, said casing heilig rectangular in the present instance.

5 designates a hollow standard which projects upwardly from the casing L and which is preferably accommodated in a recess 6 formed in the plate 1, whereby the casing may be easily slipped into place and as readily detached should itever become necessary to repair, replace, or adjust any of the parts.

Mounted within the standard 5 are a series of telescoped tubular shafts. The innermost of these shafts, designated 7, rests with its lower end upon a bottom plate 8 with which the casing 4C isprovided, the nextv shaft 9 rests upon a partition plate 10 secured within the casing, and the shaft 11, the outermost one of the three rests with its lower end on a corresponding plate 12. Disks 13, 14 and 15 are secured to the respective shafts 7, 9 and 11, near the lower ends thereof, and spiral springs 16 are secured to said shafts within the easing 1, each spring being secured at one end by solder or the like, to a nut 17 mounted-on a tension adjusting screw 18,said screw being swiveled in one end of the casing L1, as best illustrated in Fig. 2. By means of these screws the ten sion of these springs may be varied. The springs 16 are designed to rotate the several dll shafts about their longitudinal axes and at the same time rotate the disks 13, 14 and 15, in order to swing the leaf turning arms 19, 20 and 21, Whenever the disks are released. These arms are connected to the upper ends of the respective shafts, that arm yWhic'his rst to operate in the series beingl secured upon the shaft 11, the Yarm 20,' Which is the second to operate, bein Y secured to the upper end of the shaft 9, an cured to the upper end of the shaft 7.; Tvlihile these arms are connected to the re' spective shafts one 4above the other, as shown, they are preferably all so shaped that their free ends will lie substantially in the same horizontal plane, leaf engaging clips 22 being secured to the free ends of the arms, as shown, and being -of any desired construction or design. y

In order to limit the movement of 'the arms in both directions, bracket arms 23 are projected laterally from the standard 5 near the upper end thereof, the ends of said arms" being extended upwardly and thence ,forwardly and the upwardly projecting -portions being preferalo sleeves 24 of rubber or the like designed to avoid noise or any shock to the parts.

ln order to hold the leaf turning 'arms in operative until 'it is desired that they shall be turned under the influence of the springs 16, each disk 13 is-formed with a shoulder 13 which is preferably the termination of a 'cam edge 13b, and. pawls 25 are arranged la for engagement with said shoulders. In the present embodiment of the invention all of these pawls are mounted on the same pin 26,'one alongside of the otl1er,'eaoh pawl being provided with a I shoulder engaging tongue 252, and a releasing' tongue 25. The

pawls 25 arc'prcssed toward the respective disks 13 by means of springs 27. l/Vith the Atongues 25 in engagement with the shoulders liit is to be understood that the arms 19, 20 and 21 will be held at their initial or starting position, to the right, as illustrated in Fig. 1. l

In order to release-the disks to permit 4the leaf carrying arms to act, we have pro vided a single push bar 28 which projects inwardly from the front of the-casing, and it is provided at its front end with a .push knob or button 2f). rthis push baryis held at the outer limit ot' its movement by means of a spring 80. 'l'he push bar 2% is so arranged that ils iuucr end will engage with the tongues 25, when the push bar is shoved inwardly, il" the pawl 'he engaged with theshouldcrs lil"L of the disks; but after the pawls have been released aud the disks have been turned around, it is to be understood that the cam edges 12B, which' recede 'as' shown from lhe shoulders ifi?, permit har will not eue'airo them, hut will pass them the arm 21 being sey ly provided with buffer' when pushed inwardly. This is the essential feature of the device so far as the operation thereof by a single push bar is con cerned, for it will be seen that the inner end of the pushbar 28 .is formed with three awl engaging surfacesa, and c, arranged in stepped relation to each other and designed to be brought one after another into engagement with a corresponding pawl by a continued inward movement of the push bar. For instanc'e when the push bar is llirst Ishovedin it will engage the pawl which holds the arm 1) from moving, andihis arm will then be permitted to swing around to turn the first page and the disengaged pawl will then be permitted to swing inwardly out of the path of movement of the push bar. .A second movement of the push bar to a further 'extentthan the first movement I wlll then' cause the surface I) to engage Fwith .its`coiresp'onding paWland release the arm Q0, whereupon said second release pawl will also swing inwardly out of the path of movement of the push bar, while a third inward movement of the push bar 28 to a still further extent will cause the surface c to engage the remaining pawl and release the same so as to permit the third arm 21 to "wing around. This is the operation of the device, iat being, of course, understood that the clips 22 are first engaged with the several leaves of the composition and'swung around to'the right ready for the operation, the disks'being automatically 4engaged by the pawls and the lpush bar 28 being actu-- ated4 wlieneveitlle player is called upon to turn a page in the rendition of the musical composition being performed.

lt will be seen thatwe have provided a -very simple device which is composed of comparatively few parts that may be easily mounted and readily assembled and which will not be liable to get out of order.

Having thus described the invention, what is claimed as new is: .i

l. A'music leaf turner, comprising a plli- `rality of leaf turning arms, shafts to which the arms are secured, disks secured to the shafts, said disks having cam edges formed with lshoulders, pawls pressed against the edges of the respective disks and designed for locking engagement with said shoulders, and a single push bar provided with a stopped inner end dcsignedto engage the pawls in succession by a repeated and-gradually increasing inward movement of the push bar, the rcleasin of the iawls and the consequent lturning o the ldisk and the engagemei-it of the paWls with the cam edges of the disk permitting the swinging of the pawls out ofthe way of the push bar im- -mediately subsequent tot'he releasing operation. Y ./'music'leafturner comprising a vpli-lrality ofzleaf turning arms, shafts to '.vhicrlthe arms are secured, said shafts having a common center of rotation, disks secured to the shafts, said disks having their edges formed withshoulders and with cani edges receding from the shoulders in the direction opposite to that in which the disks turn, pawls pressed against the edges of the respective di-'sksand designed for lockin engagement with said shoulders, and a.y single push-bar provided vwith a stepped inner end designed to engage the pawls in succession by a repeated and gradually increasing in- Ward movement of the push-bar.

tures in presence of Witnesses.L

CHARLES H. DAVIS. [1.. s] JOSEPH M. DAVIS. [1.. s] Witnesses as to the signature of Charles H. Davis:

4AUGUSTUS M. JOHNSTON,

CHARLES C lVIYERs. Witnesses as to the signature of Joseph M. Davis:

JOHN M. Boosn,

O. N. YOUNG. 

